{"oa_version":"Preprint","author":[{"full_name":"Ebrahimi, Ehsan","first_name":"Ehsan","last_name":"Ebrahimi"},{"last_name":"Yadav","first_name":"Anshu","id":"dc8f1524-403e-11ee-bf07-9649ad996e21","full_name":"Yadav, Anshu"}],"OA_place":"repository","intvolume":"     15486","_id":"18755","type":"conference","date_published":"2024-12-12T00:00:00Z","scopus_import":"1","month":"12","year":"2024","article_processing_charge":"No","publication_identifier":{"isbn":["9789819608904"],"issn":["0302-9743"],"eissn":["1611-3349"]},"language":[{"iso":"eng"}],"date_created":"2025-01-05T23:01:56Z","page":"207-239","department":[{"_id":"KrPi"}],"doi":"10.1007/978-981-96-0891-1_7","oa":1,"abstract":[{"text":"A universalthresholdizer (UT), constructed from a threshold fully homomorphic encryption by Boneh et. al , Crypto 2018, is a general framework for universally thresholdizing many cryptographic schemes. However, their framework is insufficient to construct strongly secure threshold schemes, such as threshold signatures and threshold public-key encryption, etc.\r\n\r\nIn this paper, we strengthen the security definition for a universal thresholdizer and propose a scheme which satisfies our stronger security notion. Our UT scheme is an improvement of Boneh et. al ’s construction at the level of threshold fully homomorphic encryption using a key homomorphic pseudorandom function. We apply our strongly secure UT scheme to construct strongly secure threshold signatures and threshold public-key encryption.","lang":"eng"}],"acknowledgement":"Ehsan Ebrahimi is supported by the Luxembourg National Research Fund under the Junior CORE project QSP (C22/IS/17272217/QSP/Ebrahimi).","conference":{"end_date":"2024-12-13","name":"ASIACRYPT: Conference on the Theory and Application of Cryptology and Information Security","start_date":"2024-12-09","location":"Kolkata, India"},"volume":15486,"citation":{"ieee":"E. Ebrahimi and A. Yadav, “Strongly secure universal thresholdizer,” in <i>30th International Conference on the Theory and Application of Cryptology and Information Security</i>, Kolkata, India, 2024, vol. 15486, pp. 207–239.","mla":"Ebrahimi, Ehsan, and Anshu Yadav. “Strongly Secure Universal Thresholdizer.” <i>30th International Conference on the Theory and Application of Cryptology and Information Security</i>, vol. 15486, Springer Nature, 2024, pp. 207–39, doi:<a href=\"https://doi.org/10.1007/978-981-96-0891-1_7\">10.1007/978-981-96-0891-1_7</a>.","short":"E. Ebrahimi, A. Yadav, in:, 30th International Conference on the Theory and Application of Cryptology and Information Security, Springer Nature, 2024, pp. 207–239.","apa":"Ebrahimi, E., &#38; Yadav, A. (2024). Strongly secure universal thresholdizer. In <i>30th International Conference on the Theory and Application of Cryptology and Information Security</i> (Vol. 15486, pp. 207–239). Kolkata, India: Springer Nature. <a href=\"https://doi.org/10.1007/978-981-96-0891-1_7\">https://doi.org/10.1007/978-981-96-0891-1_7</a>","chicago":"Ebrahimi, Ehsan, and Anshu Yadav. “Strongly Secure Universal Thresholdizer.” In <i>30th International Conference on the Theory and Application of Cryptology and Information Security</i>, 15486:207–39. Springer Nature, 2024. <a href=\"https://doi.org/10.1007/978-981-96-0891-1_7\">https://doi.org/10.1007/978-981-96-0891-1_7</a>.","ama":"Ebrahimi E, Yadav A. Strongly secure universal thresholdizer. In: <i>30th International Conference on the Theory and Application of Cryptology and Information Security</i>. Vol 15486. Springer Nature; 2024:207-239. doi:<a href=\"https://doi.org/10.1007/978-981-96-0891-1_7\">10.1007/978-981-96-0891-1_7</a>","ista":"Ebrahimi E, Yadav A. 2024. Strongly secure universal thresholdizer. 30th International Conference on the Theory and Application of Cryptology and Information Security. ASIACRYPT: Conference on the Theory and Application of Cryptology and Information Security vol. 15486, 207–239."},"publisher":"Springer Nature","publication":"30th International Conference on the Theory and Application of Cryptology and Information Security","date_updated":"2025-01-08T10:08:05Z","quality_controlled":"1","title":"Strongly secure universal thresholdizer","main_file_link":[{"url":"https://eprint.iacr.org/2024/2078","open_access":"1"}],"day":"12","status":"public","OA_type":"green","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_status":"published"}